428754091 has 2 divisors, whose sum is σ = 428754092. Its totient is φ = 428754090.

The previous prime is 428754089. The next prime is 428754107. The reversal of 428754091 is 190457824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 428754091 - 2¹ = 428754089 is a prime.

Together with 428754089, it forms a pair of twin primes.

It is equal to p_22785484 and since 428754091 and 22785484 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (428754041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214377045 + 214377046.

It is an arithmetic number, because the mean of its divisors is an integer number (214377046).

Almost surely, 2^428754091 is an apocalyptic number.

428754091 is a deficient number, since it is larger than the sum of its proper divisors (1).

428754091 is an equidigital number, since it uses as much as digits as its factorization.

428754091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 428754091 is about 20706.3780270718. The cubic root of 428754091 is about 754.0545398144.

The spelling of 428754091 in words is "four hundred twenty-eight million, seven hundred fifty-four thousand, ninety-one".